The cop who interviewed Brooke Mueller after Charlie Sheen allegedly held a knife to her throat is now working in a grocery store, RadarOnline.com has learned exclusively.

Valerie McFarlane resigned from the Colorado Police Department following a series of incidents and Sheen’s legal team planned to attack her credibility in any future trial.

McFarlane is now working as a customer relations manager at the City Market in El Jebel outside Aspen. As part of her training she has been learning everyone else’s position –and even bagging groceries.

A worker at the store told RadarOnline.com: “Yes, she does work here.”

McFarlane resigned from the police department and has been mired in controversy. She was accused of attending and gaining free entry to the Jazz Aspen Snowmass Labor Day Festival in her police uniform while off duty, which would be a direct violation of department policy.

She also was accused of gaining VIP access and sneaking her daughter and her daughter’s boyfriend into the VIP area.

Meanwhile, the other officer who responded to Mueller’s Christmas 911 call, Rick Magnuson, made headlines after a video was released of him simulating masturbating in the Mojave Desert – and now he’s, running for sheriff of the Colorado Police Department, RadarOnline.com has learned.

Although he ran on a tough anti-drug ticket, when he was questioned during a live television debate in 2006 Magnuson boasted that he used illegal drugs while employed in law enforcement – adding that he used them only once while in Amsterdam where they are legal.